Upgrading Bash Shell on MacOS

I finally took the time to deal with the warnings about ’nosort’ that were appearing every time I started the terminal on my Mac.

It turns out that MacOS comes with bash 3.x and a number of open source tools assume you have at least bash 4.x and those tools will setup up completions with the complete command and the nosort option.

If you want to update to a recent bash version, you can do it via homebrew